CH713804A1 - Apparatus and method for removing deposits in the interior of containers or installations. - Google Patents

Abstract

The invention relates to a device (10.1) and a method for removing deposits in interiors of containers and plants by means of explosion technology. The device (10.1) contains a supply device (37) for providing an explosive mixture or its starting components and a transport line (1.2) connected to the supply device (37) for transporting the explosive mixture to a cleaning station. The transport line (1.2) is at least partially formed as a transport hose.

Description

Description The invention relates to the field of cleaning the interior of containers and systems. It relates to a device and a method for removing deposits in the interior of containers and systems by means of explosion technology. The device contains a supply device for providing an explosive mixture or its output components, as well as a transport line connected to the supply device for transporting the explosive mixture to a cleaning point.

The device and the method are used in particular to clean dirty and slagged combustion plants with caking on the inner walls.

The interiors of incinerators, e.g. of waste incineration plants or thermal power plants that are directly or indirectly exposed to the combustion process are subject to more or less severe pollution during their operation.

[0004] These contaminants have inorganic compositions and typically arise from deposits of ash particles on the wall. Coatings in the range of high flue gas temperatures are usually very hard, since they either remain melted or melted on the wall or are stuck together by deeper melting or condensing substances when they solidify on the colder boiler wall. Such deposits are difficult and inadequate to remove by known cleaning methods.

This means that the boiler forming the combustion chamber must be periodically switched off and cooled for cleaning. Since such boilers usually have rather large dimensions, it is often necessary to build a scaffold in the boiler. This also requires an interruption of operation of several days or weeks and is also extremely uncomfortable and unhealthy for the cleaning staff due to the heavy accumulation of dust and dirt. A mostly inevitable side effect of an interruption in the operation of a system is damage to container materials themselves as a result of the sharp temperature changes. In addition to the cleaning and repair costs, the plant downtime costs due to the loss of production or revenue are an important cost factor.

Conventional cleaning methods which are used in parked systems are, for example, tapping the boiler and the use of steam jets, water jet blowers / sootblowers and sandblasting.

Furthermore, a cleaning method is known in which the cooled or the hot boiler in operation is cleaned by inserting and igniting explosive devices. In the method described in the publication EP 1 067 349, an explosive device is brought near a dirty heating surface by means of a cooled lance, where the explosive charge is detonated. The heating surface caking is blown off by the force of the detonation and by the wall vibrations generated by the shock waves. The cleaning time can be significantly reduced with this method compared to the conventional cleaning methods. Furthermore, the cleaning can take place with the necessary safety precautions while the incinerator is operating or while the container is still hot. It is possible to clean a boiler in this way within hours and without interrupting operation, which takes days with a conventional cleaning method.

The disadvantage of this method is the use of explosives. In addition to the high costs for the explosives, a great deal of security must be employed to avoid accidents or theft, for example when storing the explosives. The introduction of explosives into a hot container also requires an absolutely reliable and efficient cooling system to prevent the explosives from detonating prematurely. In addition, the handling of explosives in many countries is only permitted with a special approval due to the danger and possible misuse and is subject to strict conditions. This, in turn, can be a hindrance to daily work.

Another cleaning method is known from the publication EP 1 362 213 B1, which also uses the means of explosion generation. Instead of explosives, however, a container shell inflatable with an explosive gas mixture is attached to the end of a cleaning lance according to this method. The cleaning lance is inserted into the boiler room together with the empty container casing and positioned near the point to be cleaned. The container shell is then inflated with an explosive gas mixture. By igniting the gas mixture in the container shell, an explosion is generated, the shock waves of which lead to the detachment of dirt on the boiler walls. The container shell is shredded and burned by the explosion. It therefore represents consumables.

This method and the associated device have the advantage over the above-mentioned explosive technology with explosives that the method is inexpensive to operate. For example, the starting components of a gas mixture comprising oxygen and a combustible gas, such as ethylene, are inexpensive compared to explosives. Furthermore, in contrast to explosives, the procurement and handling of the said gases do not require any special permits or qualifications, so that everyone can carry out the process with appropriate training.

Furthermore, it is also an advantage that the starting components are fed to the cleaning lance via separate feed lines and the dangerous, explosive gas mixture is therefore only produced in the cleaning lance shortly before the explosion is triggered. Compared to explosives, the handling of the individual starting components of the gas mixture is far less dangerous, since these are highly flammable but not explosive.

However, handling a cleaning lance as described in EP 1 362 213 B1 has the disadvantage that the radius of action in the interior of the container is limited. The radius of action can be increased by a larger lance length. However, even with a long cleaning lance, no radii can be overcome to get to hard-to-reach places. In addition, a longer cleaning lance increases the radius of action, but such a cleaning lance is also bulky and correspondingly more difficult to handle. The object of the present invention is therefore to modify the cleaning device described in the publication EP 1 362 213 B1 in such a way that the cleaning areas are more accessible with the cleaning device and even inaccessible areas can be reached better and easier.

In addition, the handling of the cleaning device should be simplified and safer and the flexibility should be greater.

The object is solved by the features of independent claims 1 and 26. Further developments and special embodiments of the invention result from the dependent claims, the description and the drawings.

The invention is characterized in that the transport line is designed at least in sections as a transport hose.

In this invention, the term “hose” is to be understood as a flexible, elongated hollow body. The hose differs from a pipe in its flexibility. In this context, flexible means in particular that the transport hose can be deflected in all directions from its longitudinal axis or longitudinal direction.

The term "hose" should in particular not be limited to a specific material or group of materials. For example, the hose can be made of plastic or metal or a combination thereof.

The transport hose has in particular a round, very special a circular base cross-section.

The transport line or the transport hose forms a closed transport channel through which the explosive mixture is transported. The transport takes place from the supply-side supply device to the cleaning-side outlet opening of the transport line or the transport hose.

“Supply side” means in particular facing the supply device or arranged at the supply device. “Cleaning side” means, in particular in the operating position, facing the point to be cleaned (cleaning point) or arranged at the cleaning point.

[0022] The transport channel can form a circular cross section. The transport channel can have a (largest) diameter of 60 mm or less, 50 mm or less, and in particular 40 mm or less. The (largest) diameter can be 10 mm or larger, 20 mm or larger, and in particular 30 mm or larger.

If the transport channel, as described in more detail below, formed from a hose made of polytetrafluoroethylene (PTFE), the largest diameter of the transport channel can be smaller due to its smooth inner wall and the resulting lower pressure loss or flow resistance when passing through the explosive mixture be dimensioned.

In this case, the largest diameter of the transport channel can be 20 mm or less, in particular 10 mm or less and very particularly 5 mm or less.

[0025] According to a development of the invention, the transport hose is constructed in several layers. The transport hose can in particular comprise a plurality of hoses which are guided into one another and have different material and / or structural properties.

[0026] The transport hose can contain a hose which is pressure-resistant. This hose, hereinafter referred to as the first hose, is in particular pressure-resistant against pressure forces directed radially from the inside out. Such radially acting pressure forces occur, for example, when the explosive mixture is ignited in the transport channel.

The first hose can also be tensile against axially acting tensile forces.

[0028] The first hose can be a hose braid. The hose mesh is in particular made of metal, such as steel. The hose braid is in particular a wire braid.

The transport hose can contain a hose which is gas impermeable, i.e. is gastight. This hose, hereinafter referred to as the second hose, can be an inner hose which is surrounded by the first hose.

The second hose can be a corrugated hose. A corrugated hose is a hose made of rigid material, e.g. Metal, with a wavy changing diameter, which has become flexible due to the corrugation. When bending, the waves stretch apart on the outer arch while being compressed in the inner arch at the same time.

[0031] The corrugated hose has, in particular, an annular corrugation. Corrugated hoses made of metal are colloquially referred to as corrugated pipes.

The corrugated hose is in particular made of metal, such as steel (stainless steel or stainless steel). The corrugated hose can be made of chrome steel.

[0033] The corrugated hose can be produced from a base profile by welding or hydraulic shaping.

[0034] The transport hose can also contain a further hose which forms the transport channel. In the case of a multilayer structure, this hose, referred to below as the third hose, is correspondingly arranged on the inside. The third hose can in particular be surrounded by the second hose.

The third hose is characterized in particular by the fact that its inner wall has less unevenness than the second hose, i. Has roughness.

Through the use of a third hose, the flow resistance to the corrugated hose, the inner wall of which is designed to be corrugated due to the design, should be significantly reduced. The reduction of the flow resistance in the transport channel by means of an interior wall that is as smooth as possible should allow smaller cross sections for the transport channel. In this way, the overall diameter of the transport hose can also be kept small.

The third tube is in particular a winding tube. The winding tube is in particular made of metal, such as steel (stainless steel or stainless steel). The wrapping tube can be made of chrome steel.

Winding tubes consist of turns which are loosely hooked into one another. This makes them flexible. Winding tubes can be made with a hook profile or with a folded profile, such as the Agraff profile. Due to the loose interlocking of the profiles, winding tubes are not gas or liquid-tight without special sealing measures.

However, this is not absolutely necessary in the present invention, since the third hose is primarily intended to ensure the smoothest possible inner wall and not necessarily to ensure tightness. The tightness is ensured in particular by the second hose.

[0040] According to a development of the transport hose, it has an annular channel surrounding the transport channel for the transport of a cooling medium.

For this purpose, the transport hose contains, in particular, an outer hose, hereinafter referred to as the fourth hose for the purpose of differentiation. The fourth hose is in particular impermeable to liquids, i.e. liquid-tight. The fourth hose is in particular also gas impermeable, i.e. gas-tight.

The fourth hose is in particular the outermost hose. The outermost hose forms the outer surface of the transport hose. If no annular cooling channel and thus no fourth hose are provided, the first hose in particular forms the outermost hose.

The fourth hose in particular surrounds the first hose. An annular cooling channel for a cooling medium is formed between the inner, first and the outer, fourth hose.

The cooling channel serves, for example, to cool the transport hose. This heats up due to the ignition of the explosive mixture in the transport channel. The transport hose also heats up in hot applications, i.e. if the transport hose has to be inserted into the hot interior of the container or system to be cleaned.

The cooling channel can, however, also be used to cool a component and / or a container casing which is connected to the cleaning hose on the cleaning side and which are introduced into the hot interior of the container or system to be cleaned.

The cooling medium is conveyed through the cooling channel to the cleaning-side end of the transport hose. The cooling channel is open at the cleaning-side end of the transport hose, so that the cooling medium escapes and e.g. a subsequent component and / or a container shell cools.

The fourth hose can also be a corrugated hose. The corrugated hose is in particular of the type described above. The corrugated hose is in particular made of metal, as already described above.

A fourth hose in the form of a corrugated hose made of metal, such as steel, is used in particular when the transport hose has to be inserted into the hot interior of the container or the system for cleaning. In this case, the fourth hose must be heat or heat resistant.

The fourth hose can also be made of a plastic. The fourth tube has in particular elastic properties, which give the necessary flexibility. The fourth plastic tube can contain reinforcing fibers. These can be in the form of textile fabrics, such as braid.

A fourth tube made of plastic can be used if it does not have to be heat or heat resistant. This is the case, for example, if the transport hose is not inserted into the hot interior of the container or system to be cleaned.

According to a further variant, the transport hose is inserted into the interior of the container or system to be cleaned, but the container or system is not in operation and the interior is cooled accordingly, so that no heat or heat resistance is required ,

The fourth hose can be made of an elastomer such as ethylene propylene diene rubber (EPDM). Alternatively, the fourth hose may contain an elastomer such as ethylene propylene diene rubber (EPDM).

The above-mentioned first, second, third and fourth hoses are guided into one another in the manner indicated. This means that they are arranged concentrically to one another in cross section.

According to another embodiment, the transport hose consists of polytetrafluoroethylene (PTFE). It is also possible that the transport hose contains a hose made of polytetrafluoroethylene (PTFE). The polytetrafluoroethylene (PTFE) tube forms the transport channel in particular.

The transport hose according to this embodiment can also be constructed in several layers. The polytetrafluoroethylene (PTFE) tube is particularly the innermost tube. The transport hose can in particular comprise a plurality of hoses which are guided into one another and have different material and / or structural properties.

Thus, the hose made of polytetrafluoroethylene (PTFE), analogous to the variant described above with a wrapped hose, can be guided in a pressure-resistant hose braid, i.e. be surrounded by it. The hose mesh is in particular made of metal, such as steel. The hose braid is in particular a wire braid.

[0057] The length of the transport hose can be several meters. The length of the transport hose can e.g. 5 meters or more, in particular 10 meters or more. In principle, the length of the transport hose can be up to 100 m.

The transport hose serves in particular as a line extension between the supply device or the mixing unit and an outlet opening on the cleaning side.

At the cleaning-side end of the transport line, which forms an outlet opening, a container shell can be arranged which can accommodate at least part of the explosive mixture which flows out of the transport line via the outlet opening. The amount of the explosive mixture absorbed by the container shell depends on the volume of the container shell.

The container shell is flexible. The container cover can be a sack. The container shell can be made of paper, plastic or a combination of paper and plastic. The container shell can be constructed in one or more layers.

As an alternative to the container shell, the device can also be designed such that at least part of the explosive mixture is introduced into the interior of the container or system via the outlet opening at the end of the transport line and a cloud is formed from the explosive mixture in the interior.

The cloud is characterized in particular by the fact that it does not have any physical means or a barrier, such as e.g. a container shell is delimited. The edge area of the cloud is rather in direct contact with the surrounding atmosphere.

At the cleaning-side end of the transport hose, in particular a connection component, which takes over a specific function, is arranged. The connection component forms in particular a transport channel for the explosive mixture. This represents the extension of the transport channel of the transport hose. The connecting component in particular forms the outlet opening for the explosive mixture on the cleaning side.

The connection component is in particular made of metal, such as steel.

According to one embodiment variant, the connection component can be a guide tube. The guide tube is designed in particular as a lance body.

The guide tube is designed in particular as a hand part, and is used for manual placement of the container shell or the cloud of explosive mixture inside the container or the system.

The guide tube is used in particular when the transport hose is not to be inserted into the interior of the container or the system. The guide tube is designed accordingly to be inserted into the interior of the container or system to be cleaned, in particular to be inserted manually. The guide tube allows the outlet opening to be aligned and positioned towards the cleaning point.

The guide tube may have a length of 0.5 meters or more, or 1 meter or more. The guide tube can in particular have a length of 2 meters or more, and particularly 3 meters or more, e.g. of 4 meters.

The guide tube can be constructed with multiple walls and have an annular cooling channel surrounding the transport channel. The ring-shaped cooling channel can be open on the cleaning side, so that cooling medium can escape to the outside and e.g. can cool the container shell.

The annular cooling duct of the guide tube is connected in particular via a hose coupling to an annular cooling duct of the transport hose, so that cooling medium can be transported from the cooling duct of the transport hose into the cooling duct of the guide tube.

However, the guide tube can also contain a connection device, such as a connection piece, for connecting a supply line for the cooling medium and for feeding the cooling medium into the cooling duct or into the transport duct. This means that the cooling medium is not supplied directly to the guide tube via the transport hose, but via a separate supply line.

In the cleaning-side end section of the guide tube, a container connection element for connecting a container casing can be formed.

[0073] According to another embodiment variant, a container connection element for connecting a container casing is arranged on the cleaning-side end of the transport hose. The container connection element accordingly forms the outlet opening for the explosive mixture.

This embodiment variant is used in particular when the transport hose is to be inserted into the interior of the container or system to be cleaned.

The container connection element can comprise a protective tube or protective bell, for receiving the not yet expanded, e.g. compressed or folded container shell. The same also applies to the container connection element arranged on the guide tube.

At the cleaning-side end of the transport hose, a hose coupling, in particular a quick coupling, can be used for the tool-free connection of a connection component, e.g. of the above-mentioned guide tube or the container connection member, can be provided on the transport hose.

The hose coupling in particular allows a tool-free connection by plugging the components together. Bayonet connections are also conceivable, which require a plug-in rotary movement for the connection. Screw connections are also possible.

The hose coupling in particular also has the property that the connection can be released again without tools.

The hose coupling can also be designed to pass a cooling medium from the cooling duct of the transport hose into the cooling duct of the connection component, in particular a guide tube.

The transport line or the transport hose can be connected directly or indirectly to the supply device.

Provision can be made for the transport hose to extend from the supply device, in particular from a metering unit or from a mixing unit, to the outlet opening on the cleaning side or to a connection component with an outlet opening adjoining the transport hose.

The transport hose can be connected on the supply side via a swivel joint to a component of the device, in particular to a mixing unit. The swivel joint in particular allows the transport hose to be rotated about its longitudinal axis. This avoids torsional forces that inevitably occur when moving the transport hose.

The rotary joint can be designed as a coupling, in particular a quick coupling.

The explosive mixture is produced in the device in particular from at least a first and a second starting component.

[0085] The explosive mixture mentioned is in particular gaseous. The starting components are in particular also gaseous. However, the starting components, especially if they are under pressure in pressure vessels, can also be liquid. The liquid starting components can e.g. only change to the gaseous state when the explosive, gaseous mixture is produced.

[0086] The explosive mixture contains in particular a fuel. The fuel, which is a first starting component, can be liquid or gaseous. The fuel can in particular be a rapidly evaporating liquid. The fuel can e.g. from the group of combustible hydrocarbons, such as acetylene, ethylene, methane, ethane, propane, gasoline, oil, etc.

The explosive mixture also contains in particular an oxidizing agent, such as e.g. gaseous oxygen or an oxygen-containing gas, which is the second starting component. This means that the explosive mixture is formed in particular from a first starting component, which is a fuel, and a second starting component, which is an oxidizing agent.

The starting components, which are mixed to form an explosive mixture, can themselves already be mixtures, such as gas mixtures or liquid mixtures.

In order to produce the explosive mixture from at least two starting components provided by the supply device, in particular a mixing unit is arranged between the supply device and the transport hose.

The starting components are each transported via a separate supply line, such as a hose line, from the supply device, in particular from a metering unit, to the mixing unit and fed into the latter. The supply lines are connected to the mixing unit accordingly.

The supply lines can have a length of up to 3 meters.

However, the supply lines can also be longer and e.g. Have lengths of up to 15 or 30 meters. Such longer supply lines are particularly suitable if the metering fittings are arranged on the mixing unit.

The mixing unit forms in particular a mixing zone in which the starting components introduced into the mixing unit are mixed to form an explosive mixture. The mixing unit forms corresponding feed channels for the starting components, which open into the mixing zone.

The explosive mixture is then fed into the transport line by the mixing unit and transported to an outlet opening of the transport line on the cleaning side.

The mixing unit can also be designed to feed a cooling medium into a cooling channel, in particular an annular cooling channel of the transport line. The cooling medium can be or contain a liquid, in particular water. The cooling medium is in particular a liquid-gas mixture, such as a water-air mixture.

The cooling medium or the individual starting components of the cooling medium, such as water and air, e.g. Compressed air is transported to and fed into the mixing unit via a corresponding supply line, such as hose lines. The supply lines are connected to the mixing unit accordingly. The supply of the cooling medium such as water and / or air is controlled by the control device via appropriate fittings. These fittings can be arranged in the metering unit or the mixing unit.

The cooling medium or the individual starting components of the cooling medium can in particular also be transported from the supply device via supply lines to the mixing unit.

[0098] Furthermore, an ignition device for igniting the explosive mixture can be arranged in the mixing unit. The ignition-effective component of the ignition device is arranged in particular in the mixing zone or in the mixing unit following the mixing zone.

For this purpose, the supply device comprises, among other things, pressure vessels from which the output components are transported to the mixing unit via the supply lines.

According to a further development, the supply device comprises a metering unit for the metered provision of the explosive mixture or its starting components.

[0101] The metering unit can also be designed to provide the cooling medium.

The supply lines already mentioned lead accordingly from the metering unit to the mixing unit.

The mixing unit is in particular arranged between the dosing unit mentioned and the transport hose.

The dosing unit is particularly useful as a device, e.g. trained as a mobile device. The metering unit can be mounted on rollers or wheels accordingly. The output components of the metering unit are in particular housed in a housing.

The above-mentioned pressure vessels are in particular designed as dosing vessels which provide the starting components in a fixed dosage, so that the starting components can be mixed in the mixing unit in a stoichiometric ratio to the explosive mixture. The dosing containers are in particular part of the dosing unit. This means that the dosing containers are arranged in particular in the dosing unit.

The dosing containers can in turn be fed from compressed gas cylinders with the starting components. Accordingly, the dosing unit is connected to the compressed gas cylinders via supply lines.

The device also includes a control device for controlling the method. The control device controls the, in particular metered, introduction of the explosive mixture, or its output components, into the transport line or into the mixing unit. Furthermore, the control device also controls the ignition device, via which the explosion is triggered. The control device also controls the supply of the cooling medium into the transport line or mixing unit.

The control device is in particular also arranged in the metering unit. The control device can comprise an input unit. The input unit can be arranged in the dosing unit.

In addition or as an alternative to an input unit arranged in the dosing unit, a cable-bound or wireless input unit that is mobile with respect to the dosing unit can be provided, which enables inputs apart from the dosing unit.

The input unit can comprise control buttons, an input keyboard or a touch-sensitive screen (touch screen). Furthermore, the input unit can also contain output means such as a screen or indicator lights.

The device comprises, in particular, metering fittings for the metered introduction of the gaseous mixture or the starting components. A metering valve is assigned to each output component. The dosing fitting contains in particular a valve for the controlled flow of the output components.

The metering fittings can be arranged in the metering unit. However, the metering fittings can also be arranged on the mixing unit.

The cleaning method belonging to the invention is based on the principle of bringing an explosive mixture into the vicinity of a cleaning point by means of the transport line in order to cause the explosive mixture to explode as close as possible to the cleaning point.

The cleaning method comprises the steps: - providing a gaseous, explosive mixture in the transport line, and - transporting the gaseous, explosive mixture to a cleaning-side outlet opening of the transport line; - controlled ignition of the explosive mixture by means of an ignition device, the explosive mixture being brought to explosion.

For this purpose, the starting components are introduced from the supply device or the dosing unit via the supply lines, in particular into a mixing unit, and mixed with one another in the mixing unit to form an explosive mixture.

The starting components which are under pressure in the pressure vessels pass into the lower ambient pressure when introduced into the mixing unit, as a result of which they receive the necessary kinetic energy for their transport through the supply line or for the transport of the explosive mixture through the transport line.

The mixing unit forms a mixing zone in which the starting components are mixed together to form an explosive mixture. The explosive mixture is introduced from the mixing zone into the transport line and thus into the transport hose and is transported in this or in this in the direction of the outlet opening.

A container casing is filled with the explosive mixture with the explosive mixture emerging from the outlet opening of the transport line. For this purpose, a container cover is attached to the cleaning-side outlet opening of the transport line before the explosive mixture is made available in the transport line.

According to one variant of the method, a cloud of explosive mixture is formed in the interior of the container or system to be cleaned with the explosive mixture emerging from the outlet opening of the transport line.

To trigger the explosion, the explosive mixture is ignited in particular via the ignition device. Ignition takes place in particular in the mixing zone or in an adjoining zone of the mixing unit.

The ignition can be activated immediately when the metering fittings are closed, i. take place immediately after the introduction of the starting components into the mixing unit. This is particularly true if a cloud of an explosive mixture is to be generated in the interior of the container or the system.

It can also be provided that the ignition is triggered with a delay and e.g. only occurs when the overpressure in the mixing unit has dropped to below 0.5 bar, in particular to below 0.25 bar, following the introduction of the starting components.

The explosion initiated by the ignition propagates from the mixing unit through the transport line to the outlet opening and also triggers the explosion of the explosive gas mixture in the container shell or the cloud following the outlet opening. In the case of a container, it will be destroyed in the explosion.

The force of the explosion and the surface vibrated by the shock waves, e.g. a container or pipe wall, cause the wall caking and slagging to be blown off and thus the surface to be cleaned.

The strength of the explosion necessary for cleaning and thus the amount of the gaseous starting components used to produce the explosive mixture depends on the type of contamination and on the size and type of the contaminated container. The dosage and strength of the explosion can and are preferably chosen so that no damage to installations occurs. The possibility of optimally dosing the substances used on the one hand reduces the cleaning costs, on the other hand the risk of danger and damage to the system and people.

In principle, the explosive mixture can also be obtained directly from the supply device, e.g. without a mixing unit, e.g. from a pressure vessel, provided and introduced into the transport line. However, this alternative solution is generally not considered for safety and practical reasons.

[0127] The cleaning cycle described above can be divided into different work cycles. In a first cycle, the metering valve (s) is opened and the starting components, e.g. from pressure vessels, introduced with pressure into the mixing unit, mixed there and passed on as an explosive mixture via the transport line to the outlet opening.

After introducing the specified amount of starting components into the mixing unit, the metering fittings are closed again. Immediately afterwards, the ignition is activated in a further cycle and the total volume of explosive mixture formed is brought to explosion.

Following the explosion, an explosive mixture can be generated again in a subsequent cleaning cycle by opening the metering fittings again.

The transport channel is expediently flushed with a flushing gas after the explosion and before a new cleaning cycle. Flushing the transport channel is used to remove residues such as water vapor and combustion gases from the transport channel.

[0131] Furthermore, the flushing of the transport channel can also include cooling. For this purpose, a, in particular liquid, cooling medium, such as water, can additionally be fed into the transport channel.

The feeding of a liquid cooling medium into the transport channel is particularly suitable when the hose or the wall which forms the transport channel is impermeable to liquids such as water and in particular forms a smooth inner wall, as is the case, for example, is the case with a hose made of polytetrafluoroethylene (PTFE).

[0133] A temperature sensor can be arranged in the mixing unit to monitor a cleaning cycle. The temperature sensor is arranged in particular in the mixing zone. The temperature sensor detects temperature values in the mixing unit or in the mixing zone.

A pressure sensor can also be arranged in the mixing unit, likewise for monitoring a cleaning cycle. The pressure sensor is arranged in particular in the direction of flow upstream of the mixing zone in the feed channel of the first output component (fuel) or the second output component (oxidizing agent). The pressure sensor records pressure values in the supply channel.

The two sensors are used in particular for the early detection of reignitions. Backfiring occurs when the explosive mixture spontaneously ignites in the area of the outlet opening or in the transport line. The explosive mixture is consequently ignited from the outlet opening back into the mixing zone. Due to the re-ignition, correspondingly high pressures and temperatures can arise in the mixing unit, which are detected by the pressure sensor or the temperature sensor.

Back ignition can already take place while the starting components are being introduced into the mixing unit. In order to avoid possible damage to the mixing unit or the supply device, it is important to close the metering fittings or the associated valves immediately if they re-ignite.

[0137] The pressure sensor or the temperature sensor is coupled to the control device. The control device in particular comprises a programmable logic controller (PLC control). The control device evaluates the sensor data and immediately initiates the corresponding steps, such as closing the metering fittings and canceling the current cleaning cycle, when a backfire is detected.

In order to avoid damage to the fittings, so-called check valves can be arranged in the mixing unit downstream of the metering fittings. These ensure that a pressure surge triggered by a backfire does not act on the metering valve and damage it.

[0139] The device can furthermore comprise insertion aids which simplify or enable the introduction of the transport hose into the interior of the container or the system.

Since the transport hose has no inherent stability transversely to its longitudinal direction, it is difficult to insert it into the interior of the container or the system. The transport hose may therefore have to be inserted or carried out manually by personnel stationed in the interior of the container or the system. However, this is not possible or desirable in every case.

[0141] For example, the transport hose has to be guided through spaces that are difficult to access in order to introduce it into the interior to be cleaned. Since the through openings can be arranged offset from one another, it is practically impossible for the transport hose to pass through the intermediate space in a straight line.

For this purpose, in a first embodiment of an insertion aid, the device can now comprise a flexible tube, by means of which the transport hose can be guided through passages in the interior of the container or system to be cleaned. For this purpose, the flexible tube forms a, in particular closed, guide channel. The transport hose is guided through this guide channel.

The flexible tube is characterized in particular by the fact that it is flexible, but is nevertheless semi-rigid. This allows the flexible tube to be bent from its longitudinal axis, but remains in its bent position even under the influence of gravity. The flexible tube is especially made of metal, such as steel. The flexible tube can e.g. be a coiled metal hose.

The flexible tube can now be installed once by the operating personnel and bent according to the course of the insertion path. Once the flexible pipe has been laid and bridges a gap, for example, the transport hose can be guided through the flexible pipe and pulled out again as often as required. This is particularly important because, when using container casings, the transport hose has to be pulled out of the interior for each cleaning process for the purpose of fastening a new container casing and must be reinserted into it.

Furthermore, it may be necessary to insert the transport hose from the side to different degrees into the interior of the container or the system. This is also not possible without an insertion aid, since the transport hose is deflected from its lateral insertion direction due to the force of gravity.

For this purpose, in a second embodiment of an insertion aid, the device can comprise an insertion tube, by means of which the transport hose can be inserted into the interior of the container or system to be cleaned via an opening. For this purpose, the insertion tube forms a, in particular closed, guide channel. The insertion depth of the transport hose can be determined by the insertion position of the insertion tube.

The insertion tube is particularly straight. The insertion tube is in particular made of metal, such as steel.

At its opening on the cleaning side, the insertion tube can have a downward, curved support for the transport hose. The arched support serves as kink protection and is intended to prevent the transport hose from kinking downwards.

[0149] The flexible tube and the insertion tube can contain a cooling device for cooling the transport tube inside the flexible tube and the insertion tube. For example, the flexible tube or the insertion tube can be double-walled and comprise an annular cooling channel which surrounds the guide channel. A cooling medium, such as water, is fed into the cooling channel.

The flexible tube or the insertion tube can contain a connection device, such as a connecting piece, for connecting a supply line for the cooling medium and for feeding the cooling medium into the cooling channel.

For positioning the transport hose with the container casing in the interior of the container or system to be cleaned, a cable pull system can be provided, by means of which the transport hose with the container casing or with the outlet opening in the interior can be pulled up and / or lowered vertically.

Furthermore, the cable pull system can also be designed such that the transport hose with the container cover or with the outlet opening can be moved horizontally in the interior.

The cable pull system comprises in particular one or more flexible traction means and one or more deflection rollers. The flexible traction device can be a rope, cord, belt, belt, cable or chain.

The cable pull system can be designed as a simple cable pull or can include one.

[0155] The cable system can be designed as a pulley system or comprise one.

Thanks to the transport hose, the device according to the invention enables long ranges not previously achieved without the supply device or the metering unit having to be repeatedly moved.

The flexible transport hose can be guided into the interior of the container or the system to be cleaned via complex insertion paths, which is not possible with conventional cleaning lances.

[0158] Thanks to the special structure of the transport hose, despite its flexibility, it is both pressure and heat resistant. The smooth inner wall of the transport channel also allows the explosive mixture to be transported over long distances without incisive pressure loss.

Since, in contrast to conventional cleaning lances, the mixing unit is no longer arranged on a hand part, such as a lance body, but rather in front of the transport hose in the direction of flow, handling is considerably simplified. A lance body designed as a handpiece without a mixing unit weighs significantly less than a conventional cleaning lance with a mixing unit.

The arrangement of the mixing unit far away from the hand part also increases safety, since the operating personnel are no longer directly at the mixing unit when operating the device. It should be noted in this regard that the mixing unit, when viewed across the entire system, is most susceptible to safety-relevant faults, such as those that occur during reignitions.

The subject matter of the invention is explained in more detail below on the basis of preferred exemplary embodiments which are illustrated in the accompanying drawings. Each shows schematically:

1a: a cross-sectional view of a transport hose according to the invention;

1b: a cross-sectional view of the corrugated hose of a transport hose according to FIG. 1a;

1c: a detailed view of a transport hose according to FIG. 1a;

2 shows a cross-sectional view of a further embodiment of a transport hose according to the invention with a cooling channel;

3a: a cross-sectional view of a further embodiment of a transport hose according to the invention with a cooling channel;

3b: a side view of the transport hose according to FIG. 3a;

4: the supply-side area of the cleaning device according to the invention;

5a: the cleaning-side area of the cleaning device according to FIG. 4 according to a first configuration;

Fig. 5b: the cleaning-soapy area of the cleaning device according to Fig 4 according to a second configuration;

6: an embodiment variant of the cleaning device according to the invention;

7: a further embodiment of the cleaning device according to the invention;

8 shows a further variant of the cleaning device according to the invention;

9a: a further embodiment of the cleaning device according to the invention;

9b: a modification of the execution variant according to FIG. 9a;

10a: a further embodiment of the cleaning device according to the invention;

10b: a detailed view of the cleaning device according to FIG. 10a from the area of the flexible tube;

11: a further embodiment of the cleaning device according to the invention;

12: a side view of a further embodiment variant of an insertion tube.

In principle, the same parts are provided with the same reference symbols in the figures. To understand the invention, certain features are not shown in the figures. The exemplary embodiments described are examples of the subject matter of the invention and have no restrictive effect.

The transport hose 1.1 shown in FIGS. 1a to 1c has an inner winding hose 6 with a folded profile made of metal. The winding tube 6 forms the transport channel 3 for the explosive mixture. The winding tube 6 forms a smooth inner wall, which is only interrupted by a helically running groove, along which the folded profiles interlock. The loose fitting of the folded profiles gives the winding tube 6 the necessary flexibility. However, the winding tube 6 is also not gas-tight as a result.

A corrugated tube 5 made of metal, which surrounds the winding tube 6 (concentrically), ensures the necessary gas tightness. The corrugated configuration of the corrugated hose 5 gives it the necessary flexibility.

To absorb radially outward pressure forces, such as those that occur during the ignition of the explosive mixture, a hose mesh 4 made of metal surrounds the corrugated hose 5. In addition to radial pressure forces, the hose mesh 4 also takes on axially, i.e. along the longitudinal axis L, acting tensile forces. The tubular braid 4 prevents the winding tube 6 or the corrugated tube 5 from being deformed by the compressive and tensile forces mentioned.

1a, the transport hose 1.1 is equipped on the cleaning side with a hose coupling 2, which allows the tool-free connection of connecting components to the transport hose 1.1.

The transport hose 1.1 described represents a basic design which does not have a separate cooling duct and can therefore only be cooled from the inside by introducing a cooling medium into the transport duct 3.

Since the transport hose 1.1 is made entirely of metal, it is correspondingly heat-resistant or heat-resistant and also extremely robust against the adverse environmental conditions that prevail in the interior of the containers or systems to be cleaned, especially when cleaning during operation of the Investment.

FIG. 2 shows an embodiment with cooling channel 39 based on the basic design according to FIGS. 1a-1c. The transport hose 1.2 contains, analogously to the basic design according to FIGS. 1a-1c, an inner winding hose 6, one surrounding the winding hose 6 (concentrically) Corrugated hose 5 and a hose braid 4 surrounding the corrugated hose 5 (concentrically). For further details, reference is made to the description of FIGS. 1a-1c.

In contrast to the basic embodiment according to FIGS. 1a-1c, the transport hose 1.2 contains a further, outer hose 7.1 surrounding the hose braid 4 (concentrically) made of ethylene-propylene-diene rubber (EPDM). The hose 7.1 mentioned is liquid-tight.

[0171] Since the outer hose made of EPDM has elastic properties due to the material and is therefore flexible, in contrast to the winding hose or corrugated hose, it does not need to have any particular outer geometry.

An annular cooling channel 39 is formed between the outer hose 7.1 and the hose braid 4, in which a cooling medium 9 can be transported from the supply-side end of the transport hose 1.2 to its cleaning-side end.

On the supply side, a mixing device 12 is connected to the transport hose 1.2 (only indicated schematically), which likewise forms a transport duct and a cooling duct, which are connected to the transport duct 3 and the cooling duct 39 of the transport hose 1.2.

Since the outer hose 7.1 made of EPDM is only heat or heat resistant to a limited extent, this embodiment of a transport hose 1.2 is not suitable for insertion into the hot interior of the container or system to be cleaned, especially when it is in operation.

Said transport hose 1.2 is used in particular for use as a line extension outside the interior to be cleaned or for applications in appropriately cooled interiors of containers or systems to be cleaned.

3a-3b show a further embodiment of a transport hose 1.3, which is also based on the basic design according to FIGS. 1a-1c and forms a cooling channel 39.

The embodiment according to FIGS. 3a-3b differs from the embodiment according to FIG. 2 in that the outer hose 7.2 is not made of plastic but is a corrugated hose made of metal. The external corrugated hose 7.2 can be constructed in the same way as the corrugated hose 5, which surrounds the winding hose 6 and ensures the necessary gas tightness. Correspondingly, the corrugated hose 7.2 is also liquid-tight.

An annular cooling duct 39 is likewise correspondingly formed between the outer corrugated hose 7.2 and the hose braid 4.

Since this transport hose 1.3 with cooling channel 39 consists entirely of metal, it is correspondingly heat or heat resistant and can be used for hot applications in hot interiors of containers or systems to be cleaned, which e.g. are in operation.

On the supply side, a mixing device 12 is connected to the transport hose 1.3 (only indicated schematically), which likewise forms a transport duct and a cooling duct, which are connected to the transport duct 3 and the cooling duct 39 of the transport hose 1.3.

In Fig. 3b a structure is shown, as is typical for a (cooled) transport hose 1.3, which is to be inserted into the interior of a container or system to be cleaned.

At the cleaning-side end of the transport hose 1.3 there is a container connection element 38, to which a container casing 8 is attached. The container connection element 38 has a transport channel with an outlet opening on the cleaning side, via which the explosive mixture from the transport hose 1.3 is introduced into the container shell 8.

The transport hose 1.3 is inserted together with the container casing 8 into the interior of a container or system to be cleaned. The container casing 8 is, however, only filled with the explosive mixture in the interior of the container or system to be cleaned, which mixture is supplied in the flow direction S through the transport channel 3.

At the cleaning-side end of the transport hose 1.3, the cooling channel 39 has an outlet opening from which the cooling medium 9 emerges and a connection component, such as the container connection element 38 or the container casing 8, cools.

4 shows the inventive device 10.1 from the area of the supply device 37. The supply device 37 comprises a metering unit 21 with metering containers 22, 23 for supplying a mixing unit 12 connected downstream to the metering unit 21 with a first and second output component for producing the explosive mixture. The first and second output components are supplied to the mixing unit 12 via supply lines 17, 18. The dosing containers 22, 23 are again supplied with the respective starting components via supply lines 27, 28 from gas bottles 25, 26, which are not integrated in the dosing unit 21.

The metering unit 21 is designed as a mobile device on rollers, which is intended to simplify the handling of the device 10.1 in a system.

The dosing unit 21 is also supplied externally with water and compressed air via corresponding supply lines 29, 30. These components are required for the production of the cooling medium.

[0188] Furthermore, the metering unit for the power supply also has a connecting line 36 to an external power source.

A control device 24 for controlling the cleaning process is also arranged in the dosing unit 21. Among other things, the introduction of the output components into the mixing unit 12 is controlled via the control device 24.

A mixing unit 12 is connected downstream of the metering unit 21. A first component in the form of a gaseous fuel, such as ethylene, is introduced into a first feed channel 14 of the mixing unit 12 via a first supply line 17.

Via a second supply line 18, a second component in the form of a gaseous oxidizing agent, such as oxygen, is introduced into a second feed channel 15 of the mixing unit 12. The two feed channels 14, 15 open into a mixing zone 13 in which the two components are mixed to form an explosive, gaseous mixture.

Connected downstream to the mixing unit 12 is a transport hose 1.2, which is connected to the mixing unit 12 via a swivel joint 11. The explosive mixture is introduced from the mixing zone 13 via a transport channel into the transport channel 3 of the transport hose 1.2 adjoining it.

In the present exemplary embodiment, the second feed channel 15 is arranged in a ring around the first feed channel 14. However, this arrangement is not mandatory.

The mixing unit 12 also contains an ignition device 31 with an ignition-active component arranged in the mixing zone 13 or subsequent to the mixing zone. The ignition device 31 is connected via a connecting line 32 to the metering unit 21 or to the associated control device 24. The ignition device 31 or the ignition process is controlled via the control device 24.

The mixing unit 12 further comprises a cooling channel 16 which is arranged in a ring around the mixing zone 13 or around the transport channel of the mixing unit 12 adjoining it.

The cooling duct 16 is connected to the cooling duct 39 of the transport hose 1.2 via the swivel joint 11.

The cooling medium 9 consists of water and air, which are each supplied via separate supply lines 19, 20 from the metering unit 21 into the cooling channel 16. The supply of the cooling medium 9 is also controlled via the control device 24.

Even if the mixing unit 12 has a cooling device, transport hoses can also be connected which do not contain a cooling channel 39 for introducing a cooling medium 9. In this case, no cooling medium 9 is simply fed into the mixing unit 12.

A check valve 33 is arranged on each of the two supply channels 14, 15, which is intended to prevent the introduction of pressure surges upstream from the mixing unit 12 into the supply lines 17, 18 of the output components.

[0200] Furthermore, a temperature sensor 35 is arranged in the mixing zone, which should detect abnormalities in the course of the temperature during a cleaning cycle.

For the same purpose, a pressure sensor 34 is arranged in the flow direction S upstream of the mixing zone 13 in the first feed channel 14. This is intended to detect abnormalities in the pressure curve during a cleaning cycle. Such abnormalities occur, for example, with so-called reignitions.

[0202] Since pressure sensors are extremely sensitive, this is arranged in the feed line 14, where any pressure surges with respect to the mixing zone 13 are weakened and thus cannot damage the pressure sensor 34.

5a and 5b show the device 10.1 according to the invention from the area on the cleaning side in two configurations.

The device 10.1. contains a transport hose 1.2 in both cases, which is connected on the supply side to a mixing unit 12 (see FIG. 4).

According to a first configuration according to Fig. 5a, a container connection element 38, e.g., connects to the cleaning-side end of the transport hose 1.2. In the form of a connecting piece, to which a container shell 8 is attached. This configuration has already been described in the context of FIG. 3b. Reference is made to the corresponding description.

According to this configuration, the transport hose 1.2 is inserted together with the container cover 8 into the interior of a container or system to be cleaned. The container shell 8 is, however, only filled with the explosive mixture in the interior, which is supplied in the flow direction S through the transport channel 3.

According to a second configuration according to FIG. 5b, a guide tube 42, which is designed as a hand part, connects to the cleaning-side end of the transport hose 1.2.

The guide tube 42 has a transport channel through which the explosive mixture from the transport hose 1.3 is introduced into the container casing 8. At the end on the cleaning side, the guide tube 42 has a container connection element 43 with an outlet opening, to which a container shell 8 is fastened.

According to this configuration, only the guide tube 42 with the container casing 8, but not the transport hose 1.2, is inserted into the interior of a container or system to be cleaned. The container shell 8 is, however, only filled in the interior with the explosive mixture, which is supplied in the flow direction S through the transport channel 3.

[0210] The guide tube 42 and the container connection member 38 are connected in both configurations to the transport hose 1.2 via a hose coupling 44. In this way, a guide tube 42 or a container connection element 38 can optionally be attached to the end of the hose.

The cooling duct 39 of the transport hose 1.2 is connected to the transport duct of the guide tube 42 at the cleaning-side end of the transport hose 1.3 via the hose coupling. Correspondingly, the cooling medium is guided by the transport hose 1.2 through the guide tube 42 and leaves it through an outlet opening on the cleaning side. The emerging cooling medium 9 cools the container casing 8 and optionally the container connection member 43 on the guide tube 42.

If the device 10.1 described in FIGS. 4 and 5a-5b is operated with a cooling medium 9, a transport hose 1.2 according to FIG. 2 or a transport hose 1.3 according to FIGS. 3a-3b can be used for this purpose.

The device 10.1 can, however, also be operated without a cooling medium 9, so that a transport hose 1.1 according to FIGS. 1a-1c can be used.

6 shows an embodiment variant of a device 10.2 according to the invention. The device 10.2 has the feed-side structure of the device 10.1 according to FIG. 4 and the cleaning-side structure of the device according to FIG. 5b. At this point, the description of the device is not repeated and rather reference is made to the associated description parts for FIGS. 4 and 5 b.

As can be seen from FIG. 6, for cleaning the interior 52.1 of the system 51.1, only a guide tube 42 designed as a hand part is inserted into the interior 52.1 together with a container casing 8.

The transport hose 1.1, which has the function of a line extension, is arranged outside the interior to be cleaned and is intended to bridge the distance between metering unit 21 or mixing unit 12 and the working opening in the system. Accordingly, the transport hose 1.1 does not need to be cooled. Nevertheless, in addition to the uncooled transport hose 1.1 according to FIGS. 1a-1c, a cooled transport hose 1.2, 1.3 can also be used, in particular for cooling the container casing 8 in hot applications, as described in FIGS. 2 and 3a-3b. Since the handling of the cooled transport hose 1.2 according to FIG. 2 is easier compared to the cooled transport hose 1.3 according to FIGS. 3a-3b, the transport hose 1.2 according to FIG. 2 is used in this configuration.

7 shows a further embodiment variant of a device 10.3 according to the invention. The device 10.3 has the feed-side structure of the device 10.1 according to FIG. 4 and the cleaning-side structure of the device according to FIG. 5a. A repetition of the description of the device is dispensed with at this point and reference is instead made to the associated description parts for FIGS. 4 and 5a.

As can be seen from FIG. 7, for the cleaning of the interior 52.2 of the system 51.2, the transport hose 1.3 is inserted together with a container cover 8 into the interior 52.2 to be cleaned. The transport hose 1.3. is designed according to FIGS. 3a-3b and has cooling. At this point, the description of the transport hose 1.3 is repeated. waived and rather referred to the associated parts of the description of FIGS. 3a-3b.

However, if the interior 52.2 to be cleaned has cooled down because the system for cleaning is not in operation, in addition to the cooled transport hose 1.3 according to FIGS. 3a-3b, an uncooled transport hose 1.1 according to FIGS. Laerror: character: # not foundlc can be used. Furthermore, a transport hose 1.2 according to FIG. 2 can also be used in this case. This also applies to the exemplary embodiments according to FIGS. 8, 9, 10a-10b and 11.

The device 10.3 differs from the device 10.2 according to FIG. 6 by the missing hand part in the form of a guide tube 42, by means of which the container casing 8 can be positioned in the interior 52.2.

Instead, a cable pull system 80.1 with a pulling rope 81 and deflection roller 82 is provided, by means of which the transport hose with the container cover 8 can be pulled up or down from outside the system 51.2 from above into the position to be cleaned. The deflection roller is arranged outside the system 51.2 and above the interior 52.2 to be cleaned. The pull rope 81 is inserted into the interior 52.2 through an opening above the interior 52.2 to be cleaned.

8 shows a further embodiment variant of a device 10.4 according to the invention. The device 10.4 differs from the device 10.3 according to FIG. 1 in the construction of the pulling system 80.2.

The cable pull system 80.2 contains a deflecting roller 82 which is arranged in the ceiling area of the interior 52.3 and a deflection roller 82 which is arranged on the bottom of the interior 52.3 and which allow the cable 81 to be guided through an opening in the lower area of the interior 52.2. Thanks to the two deflection rollers 82, the transport hose 1.3 with the container casing 8 (not yet expanded here) can be pulled up and down in the interior 52.2 through the lower opening by means of the pull rope 81 deflected over the two deflection rollers 82.

9a shows a further embodiment variant of a device 10.5 according to the invention. The device 10.5 differs from the device 10.3 and 10.4 according to FIGS. 7 and 8 likewise only in the construction of the cable system 80.3.

The basic structure of the cable pull system 80.3 corresponds to the cable pull system 80.2 according to FIG. 8. In contrast to FIG. 8, the deflection roller 82 arranged in the ceiling area of the interior 52.4 is not fixedly mounted here. Rather, said deflection roller 82 is fastened to a substantially horizontally oriented guide rope 83 and can be moved horizontally with it.

The guide rope 83, like the pull rope 81, can also be operated from the lower opening.

Thus, the transport hose 1.3 with the container casing 8 can be pulled up and down through the lower opening via the traction cable 81 in the interior 52.4 of the system 51.4. In addition, the transport hose 1.3 with the container casing 8 can be moved horizontally by means of the guide rope 83. In this way it is possible to reach every point in the interior 52.4 to be cleaned with the transport hose 1.3.

Of course, differently constructed cable pull systems are also possible. The use of pulley blocks as a special form of a cable system is also possible.

An alternative solution to the cable pull system according to FIG. 9a is shown in FIG. 9b. Instead of a deflection roller arranged on the bottom of the interior 52.4, the device 10.6 contains an insertion aid designed as a flexible tube 70.1 with a curvature of 90 °, by means of which the transport hose 1.3 is deflected vertically upward from a horizontal insertion direction. The structure of a flexible pipe 70.1 and its properties are described in detail in the general description section to which reference is made.

The devices 10.7-10.8 according to FIGS. 10a-10b, 11 and 12 each include an insertion aid for the transport hose 1.3 into the interior 52.5, 52.6 of the system 51.5, 51.6. The design of the transport hose 1.3 is of minor importance in this context.

10a-10b show an insertion aid designed as a flexible tube 70.2. The structure of a flexible pipe 70.2 and its properties are described in detail in the general description section to which reference is made.

10a-10b, the transport hose 1.3 must be guided from above through an intermediate space 53 into the interior 52.5 of the system 51.5 to be cleaned. Since the passage openings are horizontally offset from one another, the transport hose 1.3 cannot be lowered vertically into the interior 52.5.

In this case, a flexible pipe 70.2 is used, which is installed once between the two passage openings in the intermediate space 53. The flexible pipe 70.2 may have to be guided along passageways in the intermediate space 53, so that it has an arcuate course.

To clean the interior 52.5, the transport hose 1.3 can now be inserted or lowered and pulled out again via the flexible tube 70.2 through the intermediate space 53 into the interior 52.5 without great effort.

The flexible pipe 70.2 has the advantage that the transport hose 1.3 for replacing the container casing 8 for each cleaning cycle can be pulled out of the inner space 52.5 through the flexible pipe 70.2 as often as desired and reinserted therein. This is done without an assistant stationed in the intermediate space 53 having to guide the transport hose 1.3 through each time.

According to the embodiment according to FIGS. 11 and 12, a transport hose 1.3 with container casing 8 is inserted laterally through a lateral opening into the interior 52.6 of the system 51.6 to be cleaned. However, the horizontal insertion length is limited in configurations without a guide tube, as shown in FIGS. 3b and 5a. In addition, there is a risk of the transport hose 1.3 kinking during insertion.

In this case, an insertion tube 60.1 is used, which is pushed with a section through the opening into the interior 52.6. The structure of an insertion tube 60.1 and its properties are described in detail in the general description part to which reference is made.

The transport hose 1.3 is pushed through the closed guide channel 63 of the insertion tube 60.1 and guided horizontally through it. The horizontal insertion depth of the transport tube 1.3 can now be determined by the insertion position of the insertion tube 60.1.

The insertion tube 60.1 also has at its cleaning-side opening a downward-facing, curved support 61 for the transport hose 1.3. The arched support 61 forms a kink protection for the transport hose 1.3.

The insertion tube 60.2 shown in FIG. 12 is characterized by a cooling device for cooling the insertion tube 60.2. The insertion tube 60.2 forms a cooling channel 64 arranged in a ring around the guide channel 63, which is fed with a cooling medium 9 via a connecting piece 62. The cooling medium 9 can flow out of an outlet opening on the cleaning side. A closed cooling circuit can also be provided.

Claims (28)

claims 1. Device (10.1-10.8) for removing deposits in the interior (52.1-52.6) from containers or systems (51.1-51.6) by means of explosion technology, containing a supply device (37) for providing an explosive mixture or its starting components, one with the Supply device (37) connected transport line (1.2-1.3) for transporting the explosive mixture to a cleaning point, characterized in that the transport line (1.2-1.3) is designed at least in sections as a transport hose. 2. Device according to claim 1, characterized in that the transport hose (1.2-1.3) has a multilayer structure and a first hose (4), which is pressure-resistant, and an inner hose (5) surrounded by the first hose (4) ) which is gas impermeable. 3. Device according to claim 2, characterized in that the first hose (4) is a hose braid. 4. The device according to claim 2 or 3, characterized in that the second hose (5) is a corrugated hose. 5. Device according to one of claims 2 to 4, characterized in that the transport hose (1.2-1.3) contains an inner third hose (6) surrounded by the second hose (5), the inner wall of which is opposite the second hose (5) has less unevenness. 6. The device according to claim 5, characterized in that the third tube (6) is a winding tube. 7. Device according to one of claims 2 to 6, characterized in that the transport hose (1.2-1.3) contains an outer fourth hose (7.1, 7.2) which surrounds the first hose (4) and which is impermeable to liquids, wherein between an annular cooling channel (39) for a coolant is formed for the first (4) and fourth hose (7.1, 7.2). 8. The device according to claim 7, characterized in that the fourth hose (7.2) is a corrugated hose. 9. The device according to claim 7, characterized in that the fourth hose (7.1) is a plastic hose. 10. The device according to claim 9, characterized in that the plastic tube (7) consists of an elastomer, such as ethylene-propylene-diene rubber (EPDM), or contains this. 11. The device according to one of claims 1 to 10, characterized in that the transport hose consists of polytetrafluoroethylene (PTFE) or contains a hose made of polytetrafluoroethylene (PTFE). 12. Device according to one of claims 1 to 11, characterized in that between the supply device (37) and the transport hose (1.1-1.3), a mixing unit (12) for producing an explosive mixture of at least two starting components provided by the supply device (37) , is arranged. 13. The apparatus according to claim 12, characterized in that the mixing unit (12) contains an ignition device (31) for igniting the explosive mixture. 14. Device according to one of claims 12 to 13, characterized in that the mixing unit (12) contains at least one temperature sensor (35) arranged in a mixing zone (13) for measuring the temperature in the mixing zone (13). 15. Device according to one of claims 12 to 14, characterized in that the mixing unit (12) contains at least one pressure sensor (34) arranged in the flow direction (S) upstream of the mixing zone (13) for measuring the pressure upstream of the mixing zone (13). 16. Device according to one of claims 1 to 15, characterized in that the device (10.1-10.8) for the metered introduction of the gaseous mixture or its starting components each contains a metering device, the metering device: - in / a metering unit (21) or - is contained in the mixing unit (12). 17. The device according to claim 12 to 15, characterized in that the mixing unit (12) contains metering fittings which are arranged on the feed lines (17, 18) of the starting components in the flow direction (S) in front of the mixing zone (13). 18. The device according to claim 12 to 17, characterized in that the mixing unit (12) contains check valves (33) which are arranged on the feed lines (17, 18) of the output components in the flow direction (S) in front of the mixing zone (13). 19. Device according to one of claims 1 to 18, characterized in that the supply device (37) contains a dosing unit (21) for the metered provision of the explosive mixture or its starting components. 20. Device according to one of claims 1 to 19, characterized in that a hose coupling (44) for connecting, in particular tool-free, connection components (38, 42) is arranged at the cleaning-side end of the transport hose (1.1-1.3). 21. Device according to one of claims 1 to 20, characterized in that the transport hose (1.1-1.3) on the feed side via a swivel joint (11) with an output component of the device (10.1-10.8), in particular with the mixing unit (12), rotatably connected is. 22. Device according to one of claims 1 to 21, characterized in that a guide tube (42) is arranged at the cleaning-side end of the transport hose (1.1-1.3). 23. Device according to one of claims 1 to 21, characterized in that a container connection element (38) for connecting a container casing (8) is arranged on the cleaning-side end of the transport hose (1.1-1.3). 24. Device according to one of claims 1 to 23, characterized in that the device comprises a flexible tube (704-70.2), by means of which the transport hose (1.1-1.3) through passages in the interior (52.5) of the container or system to be cleaned ( 51.5) can be performed. 25. Device according to one of claims 1 to 24, characterized in that the device (10.1-10.8) comprises an insertion tube (60), by means of which the transport hose (1.1-1.3) via an opening into the interior (52.6) of the to be cleaned Container or system (51.6) can be inserted, the horizontal insertion depth of the transport hose (1.1-1.3) into the interior (52.6) being determined casually via the insertion position of the insertion tube (60). 26. A method for removing deposits in the interior (52.1-52.6) of containers and systems (51.1-51.6) by means of explosion technology with a device (10.1-10.8) according to claims 1 to 25, with the steps: - providing a gaseous, explosive Mixture in the transport line (1.2-1.3), and -transporting the gaseous, explosive mixture to a cleaning-side outlet opening of the transport line (1.2-1.3); - Controlled ignition of the explosive mixture by means of an ignition device (31), the explosive mixture being brought to an explosion. 27. The method according to claim 26, characterized by the following steps: attaching a container casing (8) to the cleaning-side outlet opening of the transport line (1.2-1.3); - Fill the container casing (8) with the explosive mixture emerging through the cleaning-side outlet opening of the transport line (1.2-1.3). 28. The method according to claim 26, characterized by the following steps: - Outflow of the explosive mixture through at least one cleaning-side outlet opening of the transport line (1.2-1.3) into the interior (52.1-52.6) of the container or system (51.1-51.6) to be cleaned and forming an explosive mixture cloud.